DocumentViewer.msi
If you have ever installed some HP printer drivers on your PC then there is a chance that you may get an obscure boot-time error message: Insert DocumentViewer.msi CD. If you don't have the CD handy, here is the file:
DocumentViewer.msi (1.1 MByte)
Save it somewhere and point the install dialog at it.
This should finish off installing the HP Document Viewer and enable Windows to stop bugging you.
But sometimes, Windows will also bug you for DocumentViewer.cab. Here's that too.
DocumentViewer.cab (22 MByte)
I've uploaded these files straight from my HP printer driver CD in good faith, but they are provided without any guarantee or support. Always use a virus/spyware checker on anything you download from the internet.